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CHI - IAD

$82 Find cheap flights from Chicago to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Dulles Intl departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 6/6
Thu 6/13

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Chicago to Dulles Intl (CHI-IAD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:05 pm - 12:57 pmORD-IAD
15h 52m1 stop
8:00 am - 8:10 pmIAD-ORD
13h 10m1 stop
$162Sun Country Air
Find Deal
Fri, Jun 14 - Sun, Jun 16
7:00 am - 9:55 amORD-IAD
1h 55mnonstop
6:30 am - 7:40 amIAD-ORD
2h 10mnonstop
$169United Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 12
5:47 pm - 10:52 pmMDW-IAD
4h 05m1 stop
6:00 am - 9:06 amIAD-MDW
4h 06m1 stop
$188Delta
Find Deal
Wed, May 29 - Wed, Jun 5
6:00 am - 11:57 amORD-IAD
4h 57m1 stop
6:00 am - 12:04 pmIAD-ORD
7h 04m1 stop
$188Delta
Find Deal
Tue, Sep 24 - Wed, Oct 2
10:58 am - 4:10 pmORD-IAD
28h 12m3 stops
10:50 am - 7:06 pmIAD-ORD
9h 16m1 stop
Mon, Jun 3 - Mon, Jun 10
10:58 am - 11:20 amORD-IAD
23h 22m3 stops
10:50 am - 7:06 pmIAD-ORD
9h 16m1 stop
Mon, Jun 3 - Mon, Jun 10
8:30 am - 1:44 pmORD-IAD
4h 14m1 stop
2:14 pm - 5:26 pmIAD-ORD
4h 12m1 stop
$262American Airlines
Find Deal
Sun, May 26 - Fri, May 31
8:30 am - 1:44 pmORD-IAD
4h 14m1 stop
5:02 am - 8:56 amIAD-ORD
4h 54m1 stop
$277American Airlines
Find Deal
Sun, May 26 - Sat, Jun 1
8:00 am - 3:52 pmMDW-IAD
6h 52m1 stop
2:50 pm - 7:02 pmIAD-MDW
5h 12m1 stop
$648Porter Airlines
Find Deal
Wed, May 22 - Sat, May 25
8:00 am - 3:52 pmMDW-IAD
6h 52m1 stop
2:50 pm - 7:02 pmIAD-MDW
5h 12m1 stop
$699Porter Airlines
Find Deal
Fri, May 24 - Sat, May 25

Flights from Chicago to Dulles Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from Chicago to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Chicago to Washington, D.C. Dulles Intl Airport flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Chicago to Washington, D.C. Dulles Intl Airport.
Our data shows that the cheapest route for a one-way flight from Chicago to Washington, D.C. Dulles Intl Airport cost $79 and was between Chicago O'Hare Intl Airport and Washington, D.C. Dulles Intl Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $198.

What’s the cheapest day of the week to fly from Chicago to Washington Dulles Airport?

The average price of all flights from Chicago to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Chicago to Washington Dulles Airport, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Washington Dulles Airport, Wednesday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from Chicago to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Chicago to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chicago to Washington, D.C. Dulles Intl Airport is September, where tickets cost $252 on average. On the other hand, the most expensive months are February and June, where the average cost of tickets is $386 and $353 respectively.

How far in advance should I book a flight from Chicago to Washington, D.C. Dulles Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Chicago to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Chicago to Washington, D.C. Dulles Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 87 days before departure.

Which airlines provide the cheapest flights from Chicago to Washington Dulles Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Sun Country Air ($82) and United Airlines ($85). The cheapest round-trip tickets were found on Sun Country Air ($162) and United Airlines ($169).

Which airlines fly non-stop between Chicago and Washington, D.C. Dulles Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Chicago to Washington, D.C. Dulles Intl Airport.
There is just one airline that flies from Chicago to Washington, D.C. Dulles Intl Airport direct and that is United Airlines. The best one-way deal found from United Airlines for the route is $178.

How many flights are there between Chicago and Washington, D.C. Dulles Intl Airport per day?

Each day, there are 10 nonstop flights that take off from Chicago and land in Washington, D.C. Dulles Intl Airport, with an average flight time of 1h 57m. The most common departure time is 9:00 pm and most flights take off in the morning. Each week, there are 70 flights and there are the same amount of flights each day 10.

Which cabin class options are there for flights between Chicago and Washington, D.C. Dulles Intl Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Chicago to Washington Dulles Airport take?

The duration of a nonstop flight to Washington Dulles Airport from Chicago is typically 1h 50m. The journey crosses a distance of 572 miles.

What’s the earliest departure time from Chicago to Washington Dulles Airport?

Early birds can take the earliest flight from Chicago at 6:15 am and will be landing in Washington, D.C. Dulles Intl Airport at 9:10 am.

What’s the latest departure time from Chicago to Washington Dulles Airport?

If you prefer to fly at night, the latest flight from Chicago to Washington, D.C. Dulles Intl Airport jets off at 9:45 pm and lands at 12:47 am.

Good to know

Low season

February

High season

May

Cheapest flight

$82
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from Chicago O'Hare Airport to Washington Dulles Airport

When to book flights from Chicago to Dulles Intl

Are your dates flexible? Find out the best times to travel from Chicago to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to Washington Dulles Airport flights

  • What is the cheapest flight from Chicago to Washington, D.C. Dulles Intl Airport?

    In the last 3 days, the lowest price for a flight from Chicago to Washington, D.C. Dulles Intl Airport was $82 for a one-way ticket and $162 for a round-trip.

  • Do I need a passport to fly between Chicago and Washington Dulles Airport?

    A passport is not required to fly from Chicago to Washington Dulles Airport.

  • Which airports will I be using when flying from Chicago to Washington Dulles Airport?

    Chicago has 2 major airports: Chicago Midway and Chicago O'Hare Intl. Washington, D.C. Dulles Intl is the only airport in Washington Dulles Airport. You’ll usually find the cheapest deals if you fly from Chicago O'Hare Airport.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to Washington Dulles Airport?

    All the following airlines offer inflight Wi-Fi service on the Chicago to Washington Dulles Airport flight route: American Airlines, Finnair, British Airways, Iberia, Delta, Air France, and JetBlue.

  • Which aircraft models fly most regularly from Chicago to Washington Dulles Airport?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Chicago to Washington Dulles Airport flight route.

  • Which airline alliances offer flights from Chicago to Washington Dulles Airport?

    Star Alliance is the only airline alliance operating flights between Chicago and Washington Dulles Airport.

  • On which days can I fly direct from Chicago to Washington Dulles Airport?

    There are nonstop flights from Chicago to Washington Dulles Airport on a daily basis.

  • Which is the best airline for flights from Chicago to Washington, D.C., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Washington, D.C. are Delta and United Airlines. With an average price for the route of $266 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $308 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Chicago to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Chicago to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $130 or less one-way and $303 or less round-trip.

Prefer to fly non-stop from Chicago to Washington Dulles Airport?

Find which airlines fly direct from Chicago to Dulles Intl, which days they fly and book direct flights.

Nonstop departures

Chicago to Washington, D.C. Dulles Intl

Monday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Tuesday

ANA, Air Canada, Air China, +6 more

ANA, Air Canada, +7 more

Wednesday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Thursday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Friday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Saturday

ANA, Air Canada, Air China, +7 more

ANA, Air Canada, +8 more

Sunday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

See more direct flights

Nonstop returns

Washington, D.C. Dulles Intl to Chicago

Monday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Tuesday

ANA, Air Canada, Air China, +7 more

ANA, Air Canada, +8 more

Wednesday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Thursday

ANA, Air Canada, Air New Zealand, +6 more

ANA, Air Canada, +7 more

Friday

ANA, Air Canada, Air New Zealand, +5 more

ANA, Air Canada, +6 more

Saturday

ANA, Air Canada, Air China, +7 more

ANA, Air Canada, +8 more

Sunday

ANA, Air Canada, Air New Zealand, +6 more

ANA, Air Canada, +7 more

See more direct flights
See more direct flights

Top airlines flying from Chicago to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10810 reviews
7.9Comfort
7.4Food
8.6Crew
8.0Entertainment
8.2Boarding
Airline reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

All flights were on time and boarding was issue free

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Food choice was poor and we had to buy on board snacks.

We were offer chocolate cookies , not everyone eat chocolate. Thank you

Lost luggage again. Our second trip to Mykonos, and 2nd time no luggage.

Flight was well orchestrated, made up time despite circling a bit all good on United. Travelers can just be so into themselves that common courtesy has gone out window for some, but that’s not on United.

Book cheap flights from Chicago to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Chicago to Washington, D.C. found on KAYAK in the last 72 hours.
7/15Mon
1 stopSun Country Air
16h 05mORD-IAD
$82
5/30Thu
nonstopUnited Airlines
1h 55mORD-IAD
$85
6/19Wed
1 stopDelta
4h 40mMDW-IAD
$94
9/1Sun
1 stopDelta
4h 16mORD-IAD
$94
5/30Thu
2 stops
15h 35mORD-IAD
$109
5/21Tue
3 stops
28h 12mORD-IAD
$116
5/26Sun
1 stopAmerican Airlines
4h 14mORD-IAD
$128
6/8Sat
1 stopAmerican Airlines
4h 34mORD-IAD
$148
9/15Sun
1 stopPorter Airlines
7h 22mMDW-IAD
$278
6/3Mon
1 stopPorter Airlines
7h 02mMDW-IAD
$286

Search by stops

Search by airline

Search by price

Last minute flights from Chicago to Dulles Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Chicago to Washington, D.C. that are departing in the next 10 days.
5/12Sun
multi-stop
29h 49mORD-IAD
5/17Fri
multi-stop
30h 17mIAD-ORD
$414
5/9Thu
multi-stopSun Country Air
15h 47mORD-IAD
5/12Sun
multi-stopSun Country Air
11h 33mIAD-ORD
$420
5/11Sat
multi-stopAmerican Airlines
4h 37mORD-IAD
5/21Tue
multi-stopAmerican Airlines
4h 47mIAD-ORD
$425
5/11Sat
multi-stopDelta
4h 05mMDW-IAD
5/21Tue
multi-stopDelta
4h 06mIAD-MDW
$428
5/8Wed
multi-stopDelta
5h 16mORD-IAD
5/22Wed
multi-stopDelta
4h 09mIAD-ORD
$428
5/9Thu
multi-stopAmerican Airlines
4h 14mORD-IAD
5/20Mon
multi-stopAmerican Airlines
7h 02mIAD-ORD
$441
5/11Sat
nonstopUnited Airlines
1h 50mORD-IAD
5/18Sat
nonstopUnited Airlines
2h 09mIAD-ORD
$469
5/8Wed
multi-stopUnited Airlines
4h 29mORD-IAD
5/8Wed
nonstopUnited Airlines
2h 14mIAD-ORD
$473
5/9Thu
multi-stopPorter Airlines
6h 52mMDW-IAD
5/10Fri
multi-stopPorter Airlines
9h 37mIAD-MDW
$1,116
5/8Wed
multi-stopPorter Airlines
6h 52mMDW-IAD
5/11Sat
multi-stopPorter Airlines
5h 12mIAD-MDW
$1,233

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Flights to Washington Dulles Airport

Destination:

Washington Dulles Airport (IAD)United States

Return flight deals:

Washington Dulles Airport - Chicago

Cabin classes:

$648
$912
$1,618
$198